Exclude tests directory from bandit check

... because these are not used in actual deployments.

Change-Id: Ib089a389080d8aa8943e3ebb44563859414a69f9
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

.pre-commit-config.yaml

@@ -21,6 +21,7 @@ repos:
     rev: 1.8.6
     hooks:
       - id: bandit
+        args: ['-c', 'pyproject.toml']
   - repo: https://github.com/asottile/pyupgrade
     rev: v3.20.0
     hooks:

pyproject.toml

@@ -64,3 +64,6 @@ osprofiler = "osprofiler.cmd.shell:main"
 packages = [
     "osprofiler"
 ]
+
+[tool.bandit]
+exclude_dirs = ["tests"]